Each answer below shows example data from a table. Which answer is an example of the general-purpose remarks column problem? Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column. One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column. Three rows have the values Brown, NULL, and Blue in the same column. Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row. TRUE ANSWER : ? YOUR ANSWER : ?
Eliminating modification anomalies is a(n) ________ of normalization. disadvantage advantage neither an advantage nor disadvantage either an advantage or disadvantage TRUE ANSWER : ? YOUR ANSWER : ?
We use the SQL construct COUNT(*) to count the number of rows in a table. True False TRUE ANSWER : ? YOUR ANSWER : ?
Normalization ________ data duplication. eliminates maximizes reduces increases TRUE ANSWER : ? YOUR ANSWER : ?
Most of the time, modification anomalies cause problems that are severe enough that a table should be normalized into BCNF. False True TRUE ANSWER : ? YOUR ANSWER : ?
Using the SQL GROUP BY phrase with a SELECT statement can help detect which of the following problems? The general-purpose remarks column problem The missing values problem The multivalue, multicolumn problem The inconsistent values problem TRUE ANSWER : ? YOUR ANSWER : ?
The design guidelines and priorities for read-only databases are different because read-only databases are never updated. True False TRUE ANSWER : ? YOUR ANSWER : ?
Each answer below shows example data from a table. Which answer is an example of the multivalue, multicolumn problem? Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column. Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row. Three rows have the values Brown, NULL, and Blue in the same column. One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column. TRUE ANSWER : ? YOUR ANSWER : ?
We can eliminate modification anomalies with proper normalization that results in tables in BCNF. False True TRUE ANSWER : ? YOUR ANSWER : ?
Normalization requires programmers to write more complex SQL. False True TRUE ANSWER : ? YOUR ANSWER : ?